coming up, a read on retail with tim boyle, the columbia sportswear ceo.arren buffett bets big on banks. fly from new york, this is bloomberg. ♪ alix: we turn to wall street beat, three things wall street is buzzing about this hour. brexit. the citigroup ceo says they have had no choice but to prepare for a hard brexit. buffett exit, walmart bet on banks. facebook's bad apple, unbelievable story. internal turmoil at facebook reveals mark zuckerberg insisted employees use android devices after tim cook criticize the company's model. david: that is the least critical part. joining us now is vince cignarella. brexit and with citigroup. i spoke to michael corbat yesterday. i asked what they were planning. he said hard brexit. i said if they backed off, would you change your plans? he said not so much. >> we have had no choice all along to assume a hard brexit, meaning no transition agreement. forave to be prepared basically brexit plus one to be fully open and have the ability to serve our client. david: if it went the other way, would you change? he said it i